start bit. (1) A signal to a receiving mechanism to get ready to
receive
data
or
perform a function. (2)
In
a start-stop system, a
signal preceding a character
or
block
that
prepares the receiving
device for the reception of the code elements.
start-of-text
(STX). A transmission control character
that
precedes a text
and
may be used to terminate the message
heading.
start-stop system. A data transmission system in which each
character
is
preceded by a start bit and
is
followed by a stop bit.
start-stop (SS) transmission. (1) Asynchronous transmission
such
that
a group of signals representing a character
is
preceded
by
a start bit
and
followed
by
a stop bit. (2) Asynchronous
transmission in which a group of bits
is
preceded by a start bit
that
prepares the receiving mechanism for the reception and
registration
of
a character and
is
followed by
at
least one stop bit
that
enables the receiving mechanism to come to an idle condition
pending the reception of the next character.
static memory.
RAM
using flip-flops as the memory elements.
Data
is
retained as long as power
is
applied
to
the flip-flops.
Contrast with dynamic memory.
stop bit. (1) A signal to a receiving mechanism to wait for the
next signal. (2)
In
a start-stop system, a signal following a
character
or
block
that
prepares the receiving device for the
reception
of
a subsequent character
or
block.
storage. (1) A storage device. (2) A device,
or
part
of
a device,
that
can retain data. (3) The retention of
data
in a storage
device. (4) The placement
of
data into a storage device.
strobe.
An
instrument
that
emits adjustable-rate flashes of light.
Used to measure the speed of rotating
or
vibrating objects.
STX. Start-of-text.
symbol. (1) A conventional representation
of
a concept. (2) A
representation
of
something by reason of relationship,
association,
or
convention.
Glossary-32
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